Merlin Cluster rested for a while

Oliver
Oliver
Joined: 24 Feb 05
Posts: 56
Credit: 129,576
RAC: 0
Topic 189869

I´d like to thank Einstein@Work and Steffen Grunewald for giving us, the Team "special: off topic" the chance to reach the No.1 in RAC list for some days. We had a lot of fun!

But I´m curious: What happend to the cluster the last day´s? I couldn´t find a hint. Did you do some tuning?

Es gr

echoray
echoray
Joined: 15 Feb 05
Posts: 2
Credit: 3,865,161
RAC: 583

Merlin Cluster rested for a while

Quote:
But I´m curious: What happend to the cluster the last day´s? I couldn´t find a hint. Did you do some tuning?

FYI: There are Ganglia graphs available for the Merlin cluster at http://pandora.aei.mpg.de/ganglia-webfrontend

It does indeed look like the cluster was doing some non-BOINC stuff in the last weeks. BOINC time is most likely the yellow "nice" load in the diagrams.

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,919
Credit: 193,894,709
RAC: 36,915

RE: It does indeed look

Message 16444 in response to message 16443

Quote:
It does indeed look like the cluster was doing some non-BOINC stuff in the last weeks. BOINC time is most likely the yellow "nice" load in the diagrams.

Fully true. It's running Einstein@Home only in its "spare time", i.e. on those CPUs which are not used for current jobs. In the past weeks we had quite some other data analysis jobs running there.

BM

BM

Oliver
Oliver
Joined: 24 Feb 05
Posts: 56
Credit: 129,576
RAC: 0

Dear echoray and

Dear echoray and Bernd,

thanks a lot for your kind reply.
I have already looked at the pandora page but I couldn´t figure out what was Einstein@Home and what was not. As I learned that The Merlin cluster does only analyse Geo600 and Ligo data, I thought this refered to E@H only.
Now I see this was a misapprehension.

Es gr

David Thompson
David Thompson
Joined: 23 May 05
Posts: 5
Credit: 131,550
RAC: 0

RE: I´d like to thank

Quote:

I´d like to thank Einstein@Work and Steffen Grunewald for giving us, the Team "special: off topic" the chance to reach the No.1 in RAC list for some days. We had a lot of fun!

But I´m curious: What happend to the cluster the last day´s? I couldn´t find a hint. Did you do some tuning?

It's so great to see such positive working-together for the betterment of science!

--
Intelelctual property law: [URL="http://www.davidcthompson.com"]David Thompson[/URL]

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,919
Credit: 193,894,709
RAC: 36,915

Might be interesting to know

Might be interesting to know that Merlin was originally designed and built to a large part for running precisely the software we are now using on Einstein@Home.

BM

BM

Oliver
Oliver
Joined: 24 Feb 05
Posts: 56
Credit: 129,576
RAC: 0

RE: Might be interesting to

Message 16448 in response to message 16447

Quote:
Might be interesting to know that Merlin was originally designed and built to a large part for running precisely the software we are now using on Einstein@Home.
BM

Yes, that’s exactly what I learned. So I thought Merlin would still run E@H only, because the RAC of about 50.000 is enormous. It´s quite more astonishing to hear that this is done in its idle time only.
For the reason of competition, you should do more scientific work with this cluster and not keep him idle for such a long time :-))
But sooner or later (I hope sooner) the Team “special: off topic” will reach the RAC of 50.000, also. I’m sure.

Looking forward to the day…

BTW: We`re currently working on a German translation of Bruce Allens` status report. We are at present at chapter 11. Should we post it at E@H when it`s finished?

Es gr

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,919
Credit: 193,894,709
RAC: 36,915

RE: RE: Might be

Message 16449 in response to message 16448

Quote:
Quote:
Might be interesting to know that Merlin was originally designed and built to a large part for running precisely the software we are now using on Einstein@Home.
BM

Yes, that’s exactly what I learned. So I thought Merlin would still run E@H only, because the RAC of about 50.000 is enormous. It´s quite more astonishing to hear that this is done in its idle time only.


Despite my earlier post "idle time" is not fully correct. The search for gravity wave signals from continous sources (like pulsars) is still its purpose, but (as planned) it does this not only with the method we now have extended to Einstein@Home. It does run Einstein@Home on purpose as long as there is no other search program running (or not using the whole cluster).

Quote:
BTW: We`re currently working on a German translation of Bruce Allens` status report. We are at present at chapter 11. Should we post it at E@H when it`s finished?


Sounds quite good to me! Post it here, or send a link to Reinhard Prix or to me if you want us to read over it first.

BM

BM

Oliver
Oliver
Joined: 24 Feb 05
Posts: 56
Credit: 129,576
RAC: 0

RE: RE: BTW: We`re

Message 16450 in response to message 16449

Quote:
Quote:
BTW: We`re currently working on a German translation of Bruce Allens` status report. We are at present at chapter 11. Should we post it at E@H when it`s finished?

Sounds quite good to me! Post it here, or send a link to Reinhard Prix or to me if you want us to read over it first.
BM

Sure, this work should definitely been read first by someone who is familiar with the stuff. Here is the link:
http://www.heise.de/foren/go.shtml?read=1&msg_id=8811100&forum_id=74338

I hope you`ll get access with no difficulties. Please choose: "Threadanzeige einschalten" this will make it a lot easier for you to find the chapters, because we did it one by one.
And don´t laugh!!! :-)

Es gr

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.